Determine whether matrix B is the inverse of matrix A by finding the product AB.A = 
, B = 
A. B ? A-1
B. B = A-1
Answer: B
Mathematics
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Evaluate the integral.
A. 4i - 72j + 
k
B. 8i - 72j + 
k
C. 8i - 72j + 
k
D. 8i + 72j + 
k
Mathematics
The graph represents the 24-hour day of a small-business owner.
How many hours of the day are spent in travel and free time?
A. 6 hours B. 3 hours C. 5 hours D. 4 hours
Mathematics
Find the perimeter of the figure.
A. 2448 inches B. 172 inches C. 208 inches D. 104 inches
Mathematics
Match the given equation with one of the graphs.x2 + y2 - 6x + 8y = -16
A. 
B. 
C. 
D. 
Mathematics